Methods and devices for accessing and retracting a capsule of a joint

a technology for accessing and retracting capsules, applied in the field of medical devices and methods for accessing joints, can solve the problems of requiring great precision, requiring high precision, and challenging to obtain arthroscopic access into orthopedic joints to perform surgical procedures

Inactive Publication Date: 2016-09-29
STRYKER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach simplifies the access process, reduces the risk of tissue damage, and provides a stable portal for instruments, enhancing surgical precision and efficiency by creating additional workspace within the joint.

Problems solved by technology

Obtaining arthroscopic access into orthopedic joints to perform surgical procedures can be extremely challenging.
However, the creation of access portals can be problematic.
Furthermore, some hip structures (e.g., the articular cartilage on the femoral head, the articular cartilage on the acetabular cup, etc.) can be quite delicate, thereby requiring great precision when forming the access portal so as to avoid damaging delicate structures.
Additionally, some of the intervening tissue (e.g., the joint capsule) can be quite tough, thus requiring substantial force to penetrate the tissue, and thereby raising the danger of accidental plunging as an access tool breaks through the intervening tissue.
Such accidental plunging increases the risk of inadvertently damaging delicate joint structures (e.g. articular cartilage).
This multi-step process requires substantial effort on the part of the surgeon, increases the instrumentation necessary for the procedure, and extends the duration of the procedure.
These tables not only are large, cumbersome and expensive, but they limit the mobility of the joint during the procedure and frequently produce complications such as nerve damage.
Even with use of a distraction table, damage to the cartilage and other joint tissue may be difficult to avoid.
Accordingly, a high amount of force is required to pierce the capsule, even with use of a sharp needle.
However, the capsule is relatively thin, 2 to 15 millimeters, and the high amount of force required to pierce it can inadvertently cause a needle to uncontrollably “pop” through the capsule and damage tissue beyond.
Each time a portal is created, the risk of unintended harm is increased.
While such devices eliminate the need for a distraction table, challenges may still be encountered in introducing these devices into the peripheral and central compartments.
Further, even where a conventional distraction table is used, the placement of portals and the introduction of instruments into the peripheral and central compartments remain challenging.

Method used

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  • Methods and devices for accessing and retracting a capsule of a joint
  • Methods and devices for accessing and retracting a capsule of a joint
  • Methods and devices for accessing and retracting a capsule of a joint

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Embodiment Construction

[0210]Devices and methods are disclosed herein for accessing the hip joint. The devices described herein can provide safely made portals within the capsule for access to the peripheral compartment by other devices. For example, the devices described herein generally provide access to the peripheral compartment by grasping and securely engaging the capsule with a first device, typically a cannula or sheath. The first device is secured enough to enable the first device to pull the capsule away from the joint and “tent” of the capsule. Tenting the capsule creates a larger volume within the peripheral compartment. A second device, typically a needle, can then be biased against the first device to apply a piercing force against the tented capsule. The use of counter-traction against the first device allows the second device to be advanced into the capsule in a controlled manner to avoid “popping” uncontrollably into the peripheral compartment. Tenting of the capsule also provides an addi...

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Abstract

Devices and methods are disclosed herein for accessing the hip joint. A first device can be securely attached to the capsule of a joint. The first device can tent the capsule to increase the volume of the peripheral compartment. A second device can be biased against the first device to pierce the tented capsule and create a portal. Devices and methods are also disclosed herein for distending the capsule of a joint. A distention device may access a portal established within the capsule. The distention device can expand the capsule by applying an expansive force within the peripheral compartment. The distention device can maintain distention of the peripheral compartment while other devices access the joint.

Description

REFERENCE TO PENDING PRIOR PATENT APPLICATION[0001]This patent application is a continuation of pending prior U.S. patent application Ser. No. 12 / 961,213, filed Dec. 6, 2010 by Thomas Weisel et al. for METHODS AND DEVICES FOR ACCESSING AND RETRACTING A CAPSULE OF A JOINT (Attorney's Docket No. FIAN-69), which in turn claims benefit of prior U.S. Provisional Patent Application Ser. No. 61 / 266,785, filed Dec. 4, 2009 by Hanson S. Gifford et al. for METHODS AND DEVICES TO ACCESS A CAPSULE OF A JOINT (Attorney's Docket No. FIAN-020979-005000 PROV).[0002]The above-identified patent applications are hereby incorporated herein by reference.FIELD OF THE INVENTION[0003]The present invention relates to medical devices and methods for accessing a joint, and more specifically to devices and methods for providing minimally invasive access into the hip joint.BACKGROUND OF THE INVENTION[0004]Obtaining arthroscopic access into orthopedic joints to perform surgical procedures can be extremely challe...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): A61B17/02A61B34/00
CPCA61B17/025A61B2017/0275A61B17/0218A61B34/73A61B17/3417A61B2017/00637A61B2017/0225A61B2017/0409A61B2017/0417A61B2017/320048A61B2017/3488A61B2018/00273A61B2018/00279
InventorWEISEL, THOMASWILLIS, GEOFFFLOM, JAMESGIFFORD, HANSON S.DEEM, MARKGITTINGS, DARINROSS, LYNETTEDUPREE, DWAYNEFRUSHELL, MATTHEW
OwnerSTRYKER CORP